Organic Fertilisers


Dolomite is a completely natural calcium magnesium carbonate that occurs as a rock deposit.

Used in farming/orchard situations where both magnesium and lime are needed, dolomite can be an excellent alternative to applying these nutrients separately, saving both time and money.

The finely ground particles of Dolomite provide a higher availability of magnesium in comparison to magnesium oxide, and thus dolomite is often chosen as a source of magnesium independently of its liming value.


An excellent fertiliser that provides both calcium and sulphur, gypsum is fast-acting and pH neutral.

Gypsum is an abundant natural mineral – a ‘clean green’ soil conditioner and fertiliser option.

Morrinsville Gypsum is also a calcium sulphate, but is derived from water treatment.

Gypsum and Morrinsville Gyspum are highly useful in improving texture, aeration and drainage characteristics of clay soils and other heavy soils.


Kieserite (otherwise known as magnesium sulphate) is an effective source of both magnesium and sulphur.

Most commonly used in horticulture, one of its great benefits is that it is suitable for all types of crops and for use in any type of soil, regardless of pH level.

It is a fast-acting fertiliser and is the premiere choice for in situations where magnesium is required urgently.

Sulphate of Potash

Sulphate of Potash (or Potassium Sulphate) supplies two key plant nutrients – potassium and sulphur.

A fast-acting fertiliser, it is commonly used in intensive farming situations to correct potassium and sulphur deficiencies.

Sulphate of Potassium has a low chloride content, making it ideal for use on chloride-sensitive crops.

Sulphate of Potassium can be easily blended with base fertilisers.


Serpentine is a natural magnesium-rich mineral that offers a slow release of magnesium.

As a fertiliser, Serpentine is used for gradually increasing soil magnesium levels or for maintaining levels.

Serpentine is most commonly used on dairy, sheep & beef and cropping farms and can be blended with lime and other fertilisers.


Ulexite (9.9 % B) contains boron in soluble (sodium borate) and insoluble (calcium borate) forms, which is released more slowly in the soil. Ulexite is mainly used in forestry where fertilisers are applied infrequently, i.e. several years may lapse between applications. Granubor is preferred in annual crops, and where annual/seasonal applications are made in perennial tree crops and vines.


The most highly concentrated form of compost available, Humate is the ancient remains of organic matter decomposed over millions of years.

Humate is free of any chemicals, and contains fulvic and humic acids, which are proven to help retain nutrients for plants and stimulate root development.

From the land, back to the land – increase your crop growth and yields with pure, natural Humates.

  • Increases crop growth and yield
  • Far smaller volumes than compost are required – only 100kg per hectare compared to 1000kg per hectare
  • Blend with any fertiliser for simple, cost-effective application

So, what exactly does Humate do?

Humates is a soil conditioner like no other, improving soil structure and moisture retention, releasing locked-in minerals for uptake by plants, and increasing worm populations and other biological activity in the soil.

When it’s time for planting, Humates gives your seeds the best possible start – it is natural stimulator of germination and root growth.

Using Humates with your fertiliser reduces your requirements for fertiliser application. Because in most cases, humates help make these nutrients not only more available to the plant but allow the plant to use them more efficiently.

Humates also helps your fertilisers work harder, by strengthening plant root systems and slowing the release of fertiliser in the soil. Your plants are able to absorb more nutrients and utilise them more effectively – also meaning less fertiliser released into our environment.

Humates also increases the nutritional and vitamin content of fruit and vegetables.

Also, since humates are completely decomposed, they do not enter into nutritional competition with plants for nutrients like nitrogen. In comparison, using raw or not fully decomposed compost can deplete the nitrogen levels in your soil, affecting crop growth.

Humates also reduces plant’s uptake of some heavy metals and toxic elements such as lead, aluminium and fluoride.


Guano phosphate fertiliser is one of the finest natural fertilisers available and can be used in all types of farming.

A rich source of phosphate, Guano fertiliser is derived from the nutrient-rich deposits of seabirds.

We supply granulated Guano fertiliser for its ease of use.

Our Guano phosphate fertiliser is BioGro certified.

Reactive Phosphate Rock

RPR (reactive phosphate rock) is a slow-release phosphate fertiliser ideal for maintaining levels of phosphate in the soil.

RPR breaks down under acid soil conditions, releasing phosphate to the soil over time. The release of phosphate from RPR increases with soil moisture.

Using RPR has a number of benefits, including minimal phosphate losses through leaching and run-off.

RPR can be safely mixed with dolomite, magnesium oxide or elemental sulphur.